Ernest sydney



Aug. 28,1928. 1,682,312

E. SYDNEY HYDRAULIC AND OTHER PRESSES Filed J ly 2. 1926 .231 uenlar:

Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

ERNEST SYDNEY, OF LONDON, ENGLAND, ASSIGNOR TO JAMES ROBINSON 86 SONS(RQMILEY) LTD, OF STOCKPOR' I, ENGLAND.

HYDRAULIC AND OTHER PRESSES.

Application filed July 2, 1926, Serial No. 120,102; and in Great BritainOctober 1, 1925 This invention has reference to hydraulic and otherpresses used in the manufacture of various articles, more particularlyhats, and is applicable to such presses whether the hats to be producedare of thestii'l, hard, flexible or soft kind; the invention having forits object the provision of means for ensuring the safety of theoperator in the event of fracture or derangement occurring in a holdingpart of the press during the working thereof; a further object being toprevent damage to other parts of the machine.

According to this invention the upper or vertically movable plate of thepress is provided with lugs or brackets which are adapted to engage thelever or handle, whereby the plate is freed or manipulated, in such amanner as to lock or hold the same. The said lever or handle is mountedrotatively in relation to the plate and has one or more arms, one ofwhich is adapted to serve as the operative handle. One or more of thelugs or brackets may carry a spring against which the lever or handle ismoved in operating the same and by which. it is automatically returnedand secured upon the attendant releasing the said lever or handle, thearrangement being such that the lever or handle obtains a hearing orposition of lock in relation to a fixed part of the ,press which issuitably formed or adapted for its reception. Such fixed part mayconveniently be one of the press guides or supports.

In order that the invention may be readily understood and carried intoeffect same will now be more fully described with reference to theaccompanying drawings in which Figure 1 is an elevation of a portion ofa hat press sufficient to illustrate the application thereto of thepresent invention.

Figure 2 is a corresponding plan.

Figure 8 is a side view of the spring carrying lug or bracket detachedfrom the vertically movable plate.

Figure 4 is a side view of one of the lugs or brackets for general usewith the spring carrying lug or bracket.

Figure 5 is a plan view of the mode of mounting the lever or arm in thespring carrying lug or bracket.

Figure 6 is a plan View illustrating a modification of the safetydevice. I

a indicates the upper or vertically movable plate of the press and b theoperating lever or handle rotatively and concentrically mounted inrelation thereto. The said lever is constituted by the central boss 6and radial arms None of which latter carries the handle I). The plate a.is provided with lugs or brackets, c, 0 0 which are adapted to on gagethe lever or handle in such a manner as to lock or hold the same. Thelug or bracket 0 in the construction illustrated carries a spring 01against which the lever or handle is moved in operating the same and bywhich it is automatically returned upon release there of by theattendant so that it becomes automatically secured or held by obtaininga hearing or position of lock in relation to or on a fixed part of thepress. In the arrangement shown this position is on one of the pressguides or'supports 0. These guides or supports usually extend upwardlybeyond the press plates and one serves as an abutment for the lever orhandle arm. With the present invention there is no necessity for theseguides to project above the plates and it will be seen that their upperends serve as bearers for the outer ends of the arms when the press isopen. If desired however one of the said guides may be stopped off atthe level of the top of the press while the other of the guides may beas ordinarily constructed the arms 6 other than that pertaining to thehandle 5 being of a length which allows of their working within the saidguides as will be readily understood, while the arm with the handle Z)is the one which passes on to the upper end of the stopped-off guide orsupport so as to assume a position of rest thereon.

The brackets c and 0 may be simply of strap or cranked form as shownclearly in Figure 4 and be secured to the plate a by screws or bolts(not shown). The bracket 0 which carries the spring (Z is elongated andprovided with a sliding rod, 7" on which the spring is coiled, the saidrod being screwed or otherwise secured to the arm 6 pertaining to thehandle 6, so that the rod projects laterally from the said arm. The rodmay however be secured to a block 9, (Figures 3 and 5) having theopening for the arm 6 formed with curved contact faces so as to allow ofthe longitudinal displacement of the arm relatively to the bracketincidental to the angular movement of the lever Z). The spring d thusbears at one end against the arm or the block and at the other endagainst the depending part of the bracket through which the rod 7 slidesthere being a washer h rod f being similarly curved. The block g in thisarrangement may or may not be on the inner side of the depending part toreceive that end of the spring.

In Figure 6 an alternative form of bracket 0 is shown wherein theelongation is curved to conform to the arc incidental to the angularmovement of the lever or handle I), the

formed with curved faces for Contact with the arm 6 and obviously therod 7"" may be secured directly in the arm 5 as will be readilyunderstood from an inspection of the figure now referred to.

Although in describing the carrying out of the invention reference hasbeen made to stopping-oil? one or more of the guides or supports e a.similar effect may be obtained by shortening the chain 6 whereby theupper or movable plate a is held so that the arm may be. positioned'on.the top of the guide pillar or support adjacent thereto the height ofthe said guide in that case not necessarily being reduced.

It will be apparent that the operation of the device is such that thespring cl tends to force the handle 6 and arm 6 pertaining thereto intoa position of safety over the guide pillar 6 adapted for its reception.

In closing the press the lever or handle I) is turned through a smallangle to permit the lowering of the plate a and after the press has beenopened by raising the said plate, the lever or handle Z) is released andthe spring (Z acts to automatically return and maintain the said arm toand in the said position of safety. Thus the upper or vertically movableplate is held against falling by the lugs or brackets c, c c and thelocked relationship between the arm or lever handle and the guide pillaror support. r

1 lVhatI claim and desire to secure by Let ters Patent is 1. Inhydraulic and other presses, the combination: with the upper movableplate, guide pillars therefor and the operating lever, of bracketsprovided 011 the said plate for engaging the said lever and a springcarried by one of the said brackets, operatively related to the lever toadmit of angular move ment thereof and to automatically position thesaid lever on the upper end of said guide pillars upon the attendantreleasing the same after effecting the opening of the press.

2. In hydraulic and other presses, the com bination, with the uppermovable plate, guide pillars therefor and operating lever, of leverengaging brackets whereof one is elongated and formed with an. apertureddepending part, a rod, secured to the lever and slidable through saiddepending part, a spring coiled on the said rod and having one endacting against the lever and the other end against the said dependingpart of the bracket.

3. In hydraulic and other presses, the combination with the uppermovable plate of y guide pillars therefor having their upperterminations at the level of the top of the press, an operating leverrotatablymounted in relation to the said plate and said guide pillars,stop brackets secured to the movable plate, a. laterally extending rodon said leverslidable in one of said brackets and a spring in saidbracket for controlling the angular movement of the lever, whereby it isautomatically brought to rest on the upper terminations of the guidepillars.

In Witness whereof I have hereuntosubscribed my signature.

ERNEST SYDNEY.

